Turkish student teachers’ attitudes toward teaching in university-based and alternative certification programs in Turkey

Erdem Aksoy 서울대학교 교육연구소 2017 Asia Pacific Education Review Vol.18 No.3

The objective of this study is to comparatively analyze the university-based and alternative teacher certification systems in Turkey in terms of the attitudes of trainee teachers toward the teaching profession, explore the reasons of choosing teaching as a career as well as analyze attitudes by gender, department, and graduating faculty type in the frame of dominant ideological and economical paradigms. For the study, rational screening model was used, employing mixed methods research strategy. Participants in the study were 208 trainee teachers from the departments at the faculty of educational sciences and 200 trainee teachers at alternative certification programs at the same university. As a result of this research, it was found that university-based trainee teachers have better attitudes than trainee teachers of alternative certification programs toward the teaching profession and that female trainee teachers in both groups had better attitudes toward the teaching profession. Further, it was found that university-based trainee teachers utilized intrinsic motivators more, whereas trainees at alternative certification programs mainly utilized extrinsic motivators for career choice. Thus, intrinsic motivations of student teachers need to be strengthened as without realizing and emphasizing the divine values and the respectability of the teaching profession, it would be impossible to raise a new generation of teachers with high levels of intrinsic motivation, and the result could be having an army of technicians aiming to earn more money or have a more comfortable life rather than intellectuals who believe in contributing to and making a change in the lives of students.

Pilates-Based Training for Postural Stability in Patients with Schizophrenia

Emin Ulaş Erdem(Emin Ulaş Erdem ),Eda Akbas(Eda Akbas ),Banu Ünver(Banu Ünver ) 사피엔시아 2019 Exercise Medicine Vol.3 No.-

Objectives: Impairment in postural stability is prevalent in schizophrenia patients and this poses potential hazards. This study was planned to investigate whether the Pilates-based training improve the postural stability of patients with schizophrenia. Methods: Outpatients with schizophrenia were allocated to either Pilates exercise group (n=10), or control group (n=10) receiving no exercise. Pilates exercise group participated in supervised Pilates mat exercise program twice per week for six weeks, while the control group participated in no regular physical activity during study. Biodex Balance System was used to assess the participants’ postural stability at the baseline and after six weeks. Results: Statistical analysis revealed that Pilates exercise group showed significant improvement in terms of overall and medial/lateral postural stability scores in static condition (p<0.05). Also, overall and anterior/posterior index scores on left leg, overall and medial/lateral index scores on right leg decreased after training (p<0.05). Postural stability scores in dynamic condition, medial/lateral index score on left leg and anterior/posterior index score on right leg did not change in the Pilates exercise group (p>0.05). Conclusions: Our results showed that Pilates-based training benefit and suggest potential particular benefits in terms of postural stability in patients with schizophrenia. Pilates exercise can be added to the rehabilitation program of schizophrenia patients as a safe and effective method. Future research should include comparative exercise groups in order to determine any particular advantage to Pilates-based training in schizophrenia.

Bifunctional Fe-SBA-15-SO₃H Mesoporous Catalysts with Different Si/Fe Molar Ratios: Synthesis, Characterization and Catalytic Activity

Erdem, Sezer,Erdem, Beyhan,Oksuzoglu, Ramis Mustafa,Citak, Alime Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.5

Bifunctional Fe-SBA-15-$SO_3H$ mesoporous materials with different Si/Fe molar ratios (3, 5, and 7) have been synthesized via a simple direct hydrothermal method and characterized by XRD, $N_2$-adsorption/desorption, TG/DTG and FT-IR techniques, and used as solid acid catalysts in the esterification of lactic acid with methanol. XRD and $N_2$ sorption characterizations show successful iron doping within the mesoporous channels of SBA-15-$SO_3H$. The FT-IR and TG/DTG characterizations also reveal the presence of iron. With the incorporation of Fe ions into the SBA-15-$SO_3H$, the acid sites substantially increased because of the self-separated acidity of the hydrolysis of $Fe^{3+}$ solutions. However, in the Si/Fe = 3 molar ratio, the catalytic conversion decreased which is caused by the reduced cooperation effect between the acid pairs due to the weakened hydrogen bonds and collapse of the pore structure. This further suggests that the mesoporous structure decreases with the decrease in Si/Fe ratio.

Effect of Maternal Depression on Brain-derived Neurotrophic Factor Levels in Fetal Cord Blood

Erdem Onder Sonmez,Faruk Uguz,Mine Sahingoz,Gulsum Sonmez,Nazmiye Kaya,Mehmet Akif Camkurt,Zeynel Gokmen,Mustafa Basaran,Kazim Gezginc,Sami Sait Erdem,Hasan Haluk Dulger,Erkan Tasyurek 대한정신약물학회 2019 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.17 No.2

Objective: We aimed to assess the association between cord blood brain-derived neurotrophic factor (BDNF) concentration and maternal depression during pregnancy. Methods: A total of 48 pregnant women, admitted for elective caesarean section to Department of Obstetrics and Gynecology, The Konya Research and Training Hospital and Konya Necmettin Erbakan University Meram Medical Faculty, were included in this study. The study group included 23 women diagnosed as having depression during pregnancy and the control group included 25 pregnant women who did not experience depression during pregnancy. Results: The groups had similar sociodemographic characteristics. Cord blood BDNF concentration was significantly lower in babies born to mothers with major depression as compared with those in the control group. We didn’t find any correlation between the umbilical cord blood BDNF levels and BDI scores. Conclusion: The results suggest that the existence of major depression in pregnant women may negatively affect fetal circulating BDNF levels.

LETTER TO THE EDITOR : Aeroallergen Prick Skin Test and Autologous Serum Skin Test Results in Patients with Chronic Urticaria and Their Comparison

Erdem Gecer,Teoman Erdem 대한피부과학회 2012 Annals of Dermatology Vol.24 No.4

Bifunctional Fe-SBA-15-SO3H Mesoporous Catalysts with Different Si/Fe Molar Ratios: Synthesis, Characterization and Catalytic Activity

Sezer Erdem,Beyhan Erdem,Ramis Mustafa Öksüzo lu,Alime Ç tak 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.5

Bifunctional Fe-SBA-15-SO3H mesoporous materials with different Si/Fe molar ratios (3, 5, and 7) have been synthesized via a simple direct hydrothermal method and characterized by XRD, N2-adsorption/desorption, TG/DTG and FT-IR techniques, and used as solid acid catalysts in the esterification of lactic acid with methanol. XRD and N2 sorption characterizations show successful iron doping within the mesoporous channels of SBA-15-SO3H. The FT-IR and TG/DTG characterizations also reveal the presence of iron. With the incorporation of Fe ions into the SBA-15-SO3H, the acid sites substantially increased because of the selfseparated acidity of the hydrolysis of Fe3+ solutions. However, in the Si/Fe = 3 molar ratio, the catalytic conversion decreased which is caused by the reduced cooperation effect between the acid pairs due to the weakened hydrogen bonds and collapse of the pore structure. This further suggests that the mesoporous structure decreases with the decrease in Si/Fe ratio.

Cationic surfactant templated synthesis of magnetic mesoporous nanocomposites for efficient removal of Light Green

Beyhan Erdem,Sezer Erdem,Nalan Tekin 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.7

Fe3O4-SiO2-NH2, Fe3O4-CTABSiO2-NH2 and Fe3O4-SiO2-CTABSiO2-NH2 magnetic adsorbents were successfully prepared and could be used effectively for the adsorption of Light Green from aqueous solutions. Unlike the first sample, mesoporous silica coatings were created using cetyltrimethylammoniumbromide micelles as molecular templates on superparamagnetic iron oxide in one sample, and on silica-coated iron oxide in the other sample to improve the adsorptive properties of the nanocomposites. The characterization by FT-IR, SEM/EDX, Zeta-potential, XRD, VSM, and N2-adsorption/desorption confirmed the production of mesoporous silica layer. Although coating processes with both silica and mesoporous silica layers led to a vaguely decrease in saturation magnetization of the Fe3O4- SiO2-CTABSiO2-NH2, the nanoparticles were protected with silica coatings for environment conditions and made more suitable for subsequent amino functionalization. The results determined from Batch adsorption experiments fitted to Langmuir isotherm model with maximum adsorption capacity (qmax) equal to 56.18, 196.08 and 227.27mg g1, for Fe3O4-SiO2-NH2, Fe3O4-CTABSiO2-NH2 and Fe3O4-SiO2-CTABSiO2-NH2, respectively, and it was seen from the kinetic results, the LG adsorption was identified by pseudo-second-order kinetics, revealing that LG adsorption process is homogeneous, monolayer and based on chemical interactions. According to the results, both silica and mesoporous silica coating strategy can play crucial role in improving the adsorptive properties of nanocomposites.

Histological and morphological development of the prepuce from birth to prepubertal age

Erim Erdem,Mustafa Kaplan Caliskan,Meryem Ilkay Karagul,Erdem Akbay,Banu Coskun Yilmaz,Yuksel Cem Aygun 대한비뇨의학회 2024 Investigative and Clinical Urology Vol.65 No.2

Purpose: To study the histological changes of the preputial tissue from birth to prepubertal age in order to define unnoticed morphological changes. Materials and Methods: Prepuce samples were obtained from 79 healthy boys who underwent routine ritual circumcision. Specimens were divided into six groups according to the boys’ age: newborn, 0–1 year of age, 2–3 years of age, 4–5 years of age, 6–7 years of age, and 8–9 years of age. Histologic analysis of the specimens was performed by H&E, Masson’s trichrome, Verhoeff–Von Gieson, immunohistochemical staining. Results: Microscopic examinations showed that average epithelial thickness increased after the neonatal period (p=0.001). When collagen fiber density was evaluated, no significant differences between groups were found (p=0.083). When the elastic fibers in the dermis were evaluated, it was determined that the number and thickness of elastic fibers increased with age. Immunohistochemical examinations showed that the number of peripheral nerves marked with S100 was lower in the neonatal period than at other ages (p=0.048). When the vessels marked with CD105 antibody were counted, there was no significant difference between the groups (p=0.078). Conclusions: This is the first study to examine the age-related structure of connective tissue elements in the foreskin. Our results showed that the prepuce’s prepubertal maturation process is continuous, and the first 2 years of life are appropriate not only in relation to the physiological effects of age but also the optimum structural changes for wound healing, such as vessel diameter, epithelium thickness, peripheral nerve count.

CONNECTING EURASIA AND THE AMERICAS: EXTENSION OF THE HISTORICAL SILK ROAD AND ITS GEOPOLITICAL IMPLICATIONS

ERDEM, CAGRI Academia Via Serica 2017 Acta Via Serica Vol.2 No.2

The Bering Strait crossing would link the entirety of Eurasia to the entirety of the Americas, and it can be seen as a natural extension of the historical Silk Road. There are some immense geopolitical benefits to such a project. It would bring about a profound and lasting change to the global economic and political outlook. The most valued function of the Bering Strait crossing and the extension of the associated railroad network would be to release the massive natural resources trapped underneath the tundra and permafrost for the benefit of Russia and the world. Moreover, the railroad project(s) would also build development corridors in those underdeveloped parts of the Russian Federation. The development of the resources and their rapid transportation to the global markets would contribute not only to the overall development of the region but also would be valuable for the resource-poor countries of Northeast Asia such as Japan, Korea, and China (relative to its economic size). This paper will explore the possible impact(s) of the Bering Strait crossing as a formidable infrastructure project for the economic development of the Russian Far East (RFE) from the Russian perspective under the frame of geopolitics. Furthermore, it will equally scrutinize the implications for the adjacent countries in the region.

Comparison of code provisions on lap splices

Erdem Canbay 국제구조공학회 2007 Structural Engineering and Mechanics, An Int'l Jou Vol.27 No.1

The code provisions on lap splices are critically assessed in the light of 203 beams without transverse reinforcement and 278 beams with transverse reinforcement. For comparison, the provisions given in the ACI 318, Eurocode 2, and TS 500 Codes are considered. The ACI Committee 408 recommended provision and a new proposal are also taken into account throughout the assessment. The comparison with real beam tests where the splice region was subjected to constant moment indicates that current provisions in the Codes do not agree acceptably with test results. The steel stress prediction graphs calculated by means of the Code provisions show high scatter and remain unsafe especially for test data without transverse reinforcement. Both the recent recommended provision by ACI Committee 408 and a new design expression proposed by the author have much less scatter with fewer unsafe predictions. The simplified design provision proposed by ACI Committee 408 does not yield similar results to that of the advanced design provision proposed by the same committee and therefore it could conveniently be replaced with the simpler equation proposed by the author.